Fornia



r A. L. HESS April 12, 1932. AUXILIARY WHEEL ATTACHMENT FOR CYCLES R 18,424

Origipal Filed Feb. 10, 1930 5 Sheets-Sheet 1 v N VIENTOR i B Y Awe/7 laz/xvnccfless I am M Ma A TT R NE Y3 A. L. HESS P 1932- AUXILIARY WHEEL ATTACHMENT FOR CYCLES 5 Sheets-Sheet 2 Original Filed Feb. 10, 1930 M w W Z w A TTORNEKS A. L. HESS A il 12 1932 AUXILIARY WHEEL'ATTACHMENT 03 CYCLES R 18 424 Original Filed Feb. 10, 1930 5 sheets-sheet 5 A TTORNEY A. L. HESS April 12, 1932. AUXILIARY WHEEL ATTACHMENT FOR CYCLES Re. 18,424.

5 Sheets-Sheet 4 Original Filed Feb.; 10.

7 .m w ml .5 m T w 33 I IN VENTOR M Y Awe/x lax/x2706? r7655 d/MML A TTORNE Y6 A. L. HESS A il 12, 1932, AUXILiARY WHEEL ATTACHMENT FOR CYCLES Re. 18,424

Original Filed Feb. 10, 1930 5 Sheets-Sheet 5 Tiq. 12 46 i .1;

ATTORNEY-5' Reissued Apr. 12, 1932 S TiE-S PATENT OFFICE ALBERT .LAURANCE .HESS, OF LOS ,ANGEL-ES, CALIFORNIA, .ASSIGNOR .10 GYGLETOW.

-.COR.'EORATIO'II, L'IIl, .LOS .ANGELES, CALIFORNIA, A CORPORATION .OF ,CALI- iEQRNIA AUXILIARY WHEEL ATTACHMENT EORUYCLES 0rig'inal..-N0. 1,820,190, dated August 25, 1931, Serial No. 427,181, filed Eebruary 10, .1930. Renewed.

November'IO, 1930. Applicationfore-reissue fi1ed-August"31,f1931. "Seria1'NoH560A42.

This invention relates-to a bicycle converti- -lile intoa tricycle; or a four Wheel vehicle. "The-stability ofa bicycle is maintained by *steer'ing to holdthe centre of gravity in proper'position, While-a tricycle is stable because of its three point support. In many instancesfbicycles are advantageous as a vehicle fortransport=to-certain points and it is then-desirable to tow the vehicle back. -A particular instanee is' that wherein automobile"service stations find it necessary to send service man to" drive-a car from a distant point-tothe service station. Motorcycles are commonly used 'for this "purpose andnnder the presentpract-i'ceytwo men are sent from *the-service'station;oneto drive the car on return and the other todrive'the motorcycle. Such ;practice is iinecononiical as only one -manfis'needetl for actual Work tobe performed I indriving" the automobile.

' Thepresent invention has for its primary olijectthe provision of a bicycle such-as a inotorcycle- With an attachment to convertit into a tricycle. :Another object of this invention is to providean attachment such that the bicycle maybe converte'd'into a tricycle orna'fou'r Wheel cycle at Wlll. To this-end :1 have: .pro.vided folda'hle' arms carryingtricyc'1e"Whels'-Which mayibepositioned in in- 0 operativepositioncout.of theway so;that the .vehicle'mayibe operated as a bicycle-and in open or operative position of the tricycle Wheels to afiorda tricycle or a vfour Wheel cycle. "Conditions frequently arise such as wetvweatheryor sandyzor-very rough roads whichzrendeuthe use;of a motorcycle dangerous orimpossihle. .I have therforepro- .vide'd an intermediate position of the foldable arms inWhich;the:tricyc1e Wheels serve as carri-erwvheels,'to support theinotorcyc-le which at'the sametime has both'its'wheels on "the ground "for operation under its: own power. In addition; to. the broader objects of this invent-ion, there are certain details of structurecontributing to simplicity andecononly of construction and ease of 1 manipulat-lon I 111 converting the vehicle from a bicycle into a tricycle or vice versa.

These objects together with other objects =-andeorresponding accomplishments are obtamedloy means ofthe embodimentof my invention illustrated in the accompanying drawings. in which-:

"Fig.1 is a side elevation of a preferred-"form ofqny convertiblebicycle arranged as a' tri cy le and attached to the rearo'f a vehicle of the rear portiono'fthe bicycleas shown in'Fig. 1;'Fig. 4 is. arearelevation ofthe bicycle with its rear Wheel on theground to operate as a fourwheel cycle {Fig.5v is aside elevation on an enlarged scale of the rear portion' of the bicycle, arranged as a bicycle, the arms being info-lded position ;Fig. 6: is a rear elevation of the bicycle as shown in Fig. 5;

Fig. 7-is adetail on an enlarged scale of one ofthe rodsfFig. 8"is a section as seen stibstantiallyon line -8'8 of Fig. 7; Fig. 9 is an elevation ofthe latchto hold the-arm in "folded position; Fig. 10 is asection -as seen on line 1010 of Fig. 9; Fig. 11 is a topplan view'ofthe'latch shown in "Fig. 9; FigJ-IQ is an elevation partly in section of the spring carrying arrangement for one of the toggle -arms;*-Fig. 13 is-an end-view of 'this arrangement; Fig. I4 isa detail of the locking device on the toggle arm; Fig. 15 is a view taken .on line '151'5 of Fig. 14; and Fig." 16 is a sectionas seen online 1'616 of Fig. '14.

"Referring more particularly to the; draw ings, a motorcycle of standard construction is generally indicated by 20, and has-the usual i frame .21 equipped-With a driving ,or' traction Wheel 22 at its rear end andrhaving a forked steering member 23 J-ELtTltS forward end sup- :ported on;a:wheel 24:;and provided with handle rbarsy25. The .frame earries.az.motor joint or brace.

26 with usual accessories and transmission mechanism and a saddle or operators seat 27. As the details of the motorcycle are not pertinent to the present invention, they will not be described further.

Secured to the rear of frame 21 and straddling the rear wheel is a plate 30 of inverted U-form and suitably reinforced for stiffness. Mounted on each leg of this plate is a. pair of eyes or brackets 31 having one end of an arm 32 pivotally secured therein. Pivo-tally secured in the other end of arm 32 is a steering knuckle 33, having a wheel 34 jo-urnalled thereon. Knuckle 33 is provided with the usual steering arm 35 having the rod 36 connected to it by clevis 37 and arranged to swing it. This rod is pinned to a bracket 38 mountedon plate 30 and is of telescopic con struction. (See Figs. 7 and 8.)

Clevis 37 is provided with a long shank 39 which is slidable within a hollow section 40 provided with an eye for connection to bracket 38. Shank 39 is provided with notches 39-a and 39b and a detent 41 arranged to engage either notch is mounted in a boss 42 formed on section 40. Pivoted on section 40 near this boss is a thumb lever 43 having one end engaging a notch in detent 41 and the other end engaged by a compression spring 44. This arrangement is such that the detent is normally urged into engagement' with either notch 39a or 39-?) by spring 44, thus preventing relative movement of parts 39 and 40, but may be disengaged when such movement is desired by depressing the outer end of lever 43. i

A bar 45 is attached to the knuckle pin in the outer end of arm 32 adjacent steering knuckle 33 and forms one member of a toggle A pair of bars 46 are pivotally secured to the other end of bar 45 and form the other member of the toggle joint, their inner ends being pinned to a bracket 47 mounted on plate 30. This toggle when straight forms a locking brace to hold arm 32 in its full open position as shown in Fig. 2. Adjacent the joint of arms 45 and 46 is a catch to retain the arms in straight relationship (see Figs. 14, 15 and 17 A pin 48 is rotatably mounted in arms 45 and has plates 49 attached to its ends, a knob 50 being provided for turning it. Plates 49 in their short dimension are the same width as bar 45, thus when they are turned as shown in dotted lines (Fig. 15) they will allow the toggle to break, but when in the position shown by solid lines will hold it straight. A flat spring 51 is provided to engage one of the plates and hold it against accidental movement. 7

A latch 52 is mounted on plate 30 to retain arms 32 in folded position. (See Figs. 9,310 and 11). Atoothed member 53 is slidably mounted in a sleeve 54 secured to plate 30, and is normally held projected by a. compression spring 55 engaging asmall lever 56 pivotally mounted on plate 32 and engaged in a slot in member 53. The member 53 may be retracted by operation of lever 56. The tooth engages a suitable projection on arm 32, such as an extension of the knuckle pin.

Brackets 5Sa and 58?) are secured near the bottom of plate 30 and carry abar 59 which has a coil spring 60 attached to it (see Figs. 12 and 13). The purpose of this will be described later. Bar 59 is preferably of square or of rectangular section, slidable in correspondingly shaped openings in brackets 58a and 587) and has a rounded portion'59a intermediate its ends, so that by sliding it to the left (Fig. 12) the square parts will disengage the brackets and the round portion 59a will be positioned in bracket 58a. This will allow the bar to gravitate downward or to be turned to make a half turn, lowering spring 60 to the position shown by broken. lines.

Assuming that the bicycle is being towed, all parts will then be as shown in Figs. 1, 2 and 3 wheels 24 and 34 being on the ground and driving wheel 22 being off the ground and not revolving. Arms 32 are in extended position and are held there by toggle arms 45 and 46 which are locked straight. The machine is in effect a tricycle and may be towed in any convenient manner as by a tow bar 61 attached to the rear of an automobile and when the parts are constructed in the relative proportions and arrangement indicated in the drawings the motorcycle will not tip over even when being towed rapidly around corners and over the commonly existing road surface irregularities.

When it is desired to convert it to a bicycle, the machine may be held upright by any suitable mechanism, if the motorcycle is provided with a prop, such arrangements being well know in the art. The prop is not neces sary, however, as the operator can easily maintain the balance of the motorcycle while folding up the auxiliary wheels. One of the cletents 41 is disengaged from its notch 390;, the catch on toggle arms 45 and 46 (on the same side of the machine) is released by turning knob 50 and the toggle broken. Arm 32 may then be swung upward and en-' gaged by latch 52. Similarly arm 32 on the other side may be raised, after which all parts will be as shown in Figs. 5 and 6, traction wheel 22 resting on the ground.

When for any reason it is desired to operate the machine under its own power, but due to slippery roads or other conditions, it is not practical to operate it as a bicycle, wheels 34 may be used as carrying or balancing wheels in the four wheel position asshown in Fig. 4. To convert the device from a two wheeled cycle to a four wheeled cycle the operator first rotates the springs 60 upwardly and then depresses both handles 56 thus releasing the wheel brackets and allowing them to swing bwa rd-ly; and xdownlbyz reason: of their. own Weight. iThe shanks :39 :will telescope into the hollow sleeves-AOnntilthe deternt A1 :antomatically engages ,thenotches 39%?) as ztheiauxiliary zwheelsi-reach the :fonr 'Wheel zpositiomrthat is,:contacting:thegroundsimulrtaneonsly -.With :the drive @Wheel. .At this -.ti-me :the :itoggle narms ;Will .still {be .broken rattheirjoints .(seerFig-A) and the spri'n s :willxbeengagediby. the heels-of the togg e bars-45. i (See-Figs. 4: and 13). Thus'wvheel yQQwmaypropelthe vehicle while-itis held upright-bywheels'34:. Thevarms 45 being :carried .on springs 60 introduce sufiicient fiexibilityzto alloyvqany of the three rear "WlrQGlS rto ride i over gbumps or depressions without" the drive wvheel .losi-ng contact with -.the jgronnd.

5T0 .converta thecoycle :from the four Wheel to the ithreeiwheel 1 positionv the operator Will disengagaone ofthexdetents lhfrom its notch -39b..an'd straighten the :associated toggle ,lever by .pullingeoutwardly and upwardly thereon. The 'detent 'Will then automaticalzly :engage the ethree Wheel position notch 39a; as: the shank :39 telescopesifurthen into :the. sleeve :40. This operation partially elexrvateszthedrivewvheel. The knob v50jis then 1 turned to: lock the toggle; in straightened: po-

sition. In a similar -mannerzthe operator straightens the toggle oftheopposite Wheel completing: the elevation of. the drive Wheel.

By breaking. the toggles. and. disengaging the 'detents, operating on one auxiliary Wheel :at =a time,:the cycle may be restored convenientlytofour Wheel position, and. thereafter converted: to two wheel position, ii. desired, =Without n1uch. difiiculty or physical effort. Thus itwvill be understood that the conver- -sation of: the cyclefromone condition to another :may be accomplished so rapidly and conveniently that a motorcycle equipped and operated inv accordance with this invention "may be used very efficiently in calling for and delivering automobiles, and the servicesof one'manonly are required. As indicated in the'drawi-ngs the auxiliary Wheels are-preferably equipped with pneumatic-tires of usual construction.

'1. A convert'ible bicycle comprising a frame having bicycle wheels in line, one of 'saidbicycle Wheels beinga-traction Wheel; a pair-of arms,-said arms being connected by joints to opposite sides of said 'irame for position-ing in 'folde'd' position a gainst said frame or in open positionoutstanding from said frame,- a pair of tricycle Wheels journallcd on-saidarms at the outerends-thereofl-said arms beingjointed to said frame so that When disposed in folded position saidwheels are located above ground engaging position and when disposed in outstanding position said wheels are: disposed in ground engaging-puss tion either: at or belowignoundaengagingilevel 1 tionto :said frame v inffoldedrposition :of .said

:ofzsaid tnaetimrwheel; toggle zbraees extend- .;i"ng between:saidrframeaandgsaid ,armstolock saiidz-armsiin;outstanding position with. said tricycle wheelsrbelowcground engaging level of :Silitl etraetion "Wheel, :and (means on 1.;S3id

.; of, arins,;said arms being ,COIIHGCtGdTbYzjOLlLI-ltS toopposite sidesaot said framegfonpositionin g infolded position :againstrrsald; frame 101': in

.open :position: ontstandingfifrom said frame,

.a pair ,of spindle knuckles mounted on said :.arms at :the outer ends" thereoflxa ipain oftricycle wheels journalled'on-the SPiIldlBSQiiSitid knuckles, :saifd -;a:rms rbei'ng zjointed ;to usaid irame 1 so: that WhGIljldlSPQStidijlHlfOildEdKpOSlrtion sai'd Wheels {are located above ground engaging positionandrwhen disposedin outstanding position said "wheels rare disposed in ground engaging position, stelescopic .,tie rrods,;:one; connecteditoreachirknuckle 1anld anchoredzati its other endztoithei flzameaforiposi- "t-ioning: its tricycle: Wheeh initi-avelling-ealinewing folded position; againstisaid frame :or

in open position ontstandingifromsaid frame, a pair 0fspindle knuekleszmounted .on said armstatvthe outer rendst'thereofs-a pairoil-tricycle :Wheels journalled .on Y the gspindles 50f =said'knuckles, said .armsebeingjointed to said frame so that when disposed; in:.folde.d -positionsaid wheels are looatechabovegrounden- .gaging position and when disposed-in :out-

standing position .said Wheelsxare disposed in ground engaging. position either '.at;.or.be lOW ground engaging lever," of. said: traction Wheel, telescopic tie rro'ds, one connected to each knuekleiandranchored at its other I end to: the: frame: for positioning itsztricycle Wheel in travelling alinement with said {bicycle wheelsWhen-said arm. is in'either outer position and for I lying :flat .in relation to. said *frame in folded position of; said :arms, means 1 to lock: said' tie: rods against extension oroontraction 1 With said :ztricycle wheels in: either position of its three apositions and toggle braces'to lock saidarms in; outstandingposition.

4.. A convertible.bicycle-comprising a frame cycle wheels being a traction wheel; a pair of arms, said arms being connected by joints to opposite sides of said frame for ositioning in folded position against said rame or in open position outstanding from said frame, a pair of spindle knuckles mounted on said arms at the outer ends thereof, a pair of tricycle wheels ournalled on the spindles of said knuckles, said arms being jointed to said frame so that when disposed in folded position said wheels are located above ground engaging position and when disposed in outstanding position said wheels are disposed in ground engaging position either at or below ground engaging level of said traction wheel, telescopic tie rods, one connected to each knuckle and anchored at its other end to the frame for positioning its tricycle wheel in travelling alinement with said bicycle wheels when said arm is in either outer position and for lying fiat in relation to said frame in folded position of said arms, means to lock said tie rods against extension or contraction with said 'tricycle wheels in any one of its three positions, toggle braces extending between said frame and said arms to lock said arms in outstanding position with said tricycle wheels below ground engaging level of said traction wheel, and means on said frame to support the joints of said toggle braces in position with said tricycle wheels at ground engaging level with said traction wheel.

5. A convertible bicycle oomprisin a frame having bicycle wheels in line, one 0 said bicycle wheels being a traction wheel; a pair of arms, said arms being connected by joints to opposite sides of said frame for positioning in folded position against said frame or in open position outstanding from said frame, a

pair of spindle knuckles mounted on said arms at the outer ends thereof, a pair of tricycle wheels ournalled on the spindles of said knuckles, said arms being jointed to said frame so that when disposed in folded position said wheels are located above ground engaging position and when disposed in outi standing position said wheels are disposed in ground engaging position either at or below ground engaging level of said traction wheel, telescopic tie rods, one connected to each knuckle and anchored at its other end to the frame for positioning its tricycle wheel in travelling alinement with said bicycle wheels when said arm is in either outer position and for lying flat in relation to said frame in folded positlon of said arms, means to lock said tie rods against extension or contraction with said tricycle wheels in either position of its three positions, toggle braces extending between said frame and said arms to lock said arms in outstanding position with said tricycle wheels below ground engaging level of said traction wheel, the section of each of said toggle braces connected to a knuckle having a heel extending beyond its jolnt, and

, to opposite sides of said frame for ositioning in folded position against said rame; or in open position outstanding from said frame, a pair of tricycle wheels journalled on said arms at the outer ends thereof, said arms being jointed to said'frame so that when disposed in folded position said wheels are located above ground engaging position and when disposed in outstanding position said wheels are disposed in ground engaging position, toggle braces extending between said frame and said arms to lock said arms in outstanding position, and clamps on said frame for holding said arms in folded position.

7. A convertible bicycle comprising a frame having bicycle wheels in line, one of said bicycle wheels being a traction wheel; a pair of arms, said arms being connected by joints to opposite sides of said frame for p0 sitioning in folded position against said frame or in open position outstanding from said frame, a pair of tricycle wheels journalled on said arms at the outer ends thereof, said arms being jointed to said frame so that when disposed in folded position said wheels are located above ground engaging position and when disposed in outstanding position said wheels are disposed in ground engaging position either at or below ground engaging level of said traction wheel, toggle braces extending between said frame and said arms to lock said arms in outstanding position with said tricycle wheels below ground engaging level of said traction wheel, means on said frame to support the joints of said toggle braces in position with said tricycle wheels at ground engaging level with said traction wheel, and clamps on said frame for holding said arms in folded position.

8. A convertible bicycle comprising a frame having bicycle wheels in line, a pair of arms, said arms being connected by joints to opposite sides of said frame for positioning in folded position against said frame or in open position outstanding from said frame, a pair of spindle knuckles mounted on said arms at the outer ends thereof, a pair of tricycle wheels journalled on the spindles of said knuckles, said arms being ointed to said frame so that when disposed in folded position said wheels are located above ground engaging position and when disposed in outstanding position said wheels are disposed in ground engaging position, telescopic tie rods, oneconnected to each knuckle and anchored at its other end to the frame for positioning its tricycle wheel in travelling alinement with said bicycle wheels when said arm is in either outer position and for lying flat in relation" to said frame folded: position of said arms, meansto-loclysaid tie-rods against extension or contraction With said tricycle- Wheels in either position of its three posi- 5 times-toggle brace-to lock said arm's in'out standing p osition", and" clamps on said frame for hol'ding said arms folded position.- 9. K convertible" bicycle comprising: frame having bicycle wheels "in line, one of said b icycle-Wheel's beinga traction Wheel; 4 a pain of arms; said arms being. connected by joints to opposite sides of said frame for positionin g in folded position against said frame-or in' -op'en p'o'siti'on outstanding from i said frame; a 'pair of-spindle knuckles mounted onsaid arms at the outer ends tlfereof, a pair o"tricycle-:wheels journalled on th e spindles of said I knuckles; said arms being; jmintedtd 'said frame so that when disposed 2 folded position said- Wheels' are located aboveground engaging position and when disposedin outstanding position 's aid-' Whe'els disposed in ground engaging position ei then at 1 or below ground en agin level of said 1 traction f wheel; telescopic tie"r0ds' one connectedto 'each knuckle and anchored at its-other end to the frame for position ing itstricycle wheel-in travelling alinement vvith' said-bicycle wheels when said arm is in either 1 outer position and for -lying fiat in rel ation tosaid frame in folded position oi'saidarm's; means to lock said tie rods against ei'ztensionor contraction with said 1 tricycle wheels-in either position' of its three positions, toggle "braces extending-betweensaid frameand s'aid' arms: to loclc said arms in outstanding positiolr with said tricycle Wheelsb'elovw groundengaging-L level of said traction Wheel; the section ofeach of saidtogglebraces'connecit 40 'cdto 'a knuckle 'h'aving a heel 'extending zbe yond its; joint; and f resilient means on saidframe' adjustablya disposed 5 to be positioned to support said-'heel-or toout 0f support =p'o--' sition; and clamps on said frame for holding 'saidarms in folde'd position;

10; An attachment for a bicycle compris in gla pair of substantially fiat brackets each having a substantially great Width relative to'gits lengthg means pivotally securingvaone ot said bracketsalong. its vvidth to theframe of= said bicyclev on on'e'sideof the driving wheel thereof; .for='vertica l movement rel'a tive to said =driving wheel', means p-ivotally securing the other of said brackets along I its width to the frame of -said bi'cy'cle' on *the opposite side of said driving-wheel former-- tical movement relative-to said driving Wheel, an auxiliary-wheel j ournaled to the-outer end of each bracket "and movable vvith the bracket to a plurality, of positions including one po= sition---in= which the auxiliary Wheels en-gage I the ground When-the '=bicyc1e is upright, air-1 otherposition in Which theauXili-ary wheels 5 are 'abbvethe 'groun'd; and a toggle lever "for" each of said brackets; one'end of which is con nected to 'the outer end 1 of the bracket and the opposite end o'fvt hich is connected toth e frame of said bicycle above 'the point ofattach'inen't of saidbr'a'cket for bracing" the bracket when in extended "position?- 11; Air}attaclinient' for a bicycle compris a pair ofsubstantially fi-at brackets ea'cli having a substantially great Width relative Y to it's length, means pivotany securing one otf said brackets alongits width td 'th'e frame" oi said bicycle on oneside oi' th'e driving Wheel thereof for vertical movement relative said 'drivingwvheel; means pi'votaily securin'gthe other of said brackets along -its width to the frame of said bicycle orr the opposite side o'i'said driving wlieel for 'vertical move ment relative to said drivin wheelg an ram: iliary Wheel journ'alled to theyouter end of each bracket and movable with the bracket" to a plurality of ositions including one pb sition' in which the' auxiliary Wheelsengage the ground when the bicycle "is upright and another position== in which" the auxiliary" Wheels are above-' theground; 4 a 1 third pos'ition in which the auxiliary wheels engage" the ground below the level" of said driving Wheel WlIGIL said 'bicycle is upright, ca -toggle lever for each bracket; one fend of which is secilred to =tl1e0llte1 end of-said bracket and the other end of which issecured tothe frame of said'bicycle'ata point abovethe point of attachment of said 1 bracket;- whereby said i toggle leverin extended position' braces said bracket in said-last named position and whom col-lapsed permits saidbracket'to be folded- 0 rel ative'to said drivingvvheel; and resili'ent means supporting said toggle lever-in aFpair tially "folded position to constitute a re'silient brace *for said bracket when' the bracket: is in said first named position.

12. -An attachment for b'icycles comprising an' inverted- U-shap'ed support adaptedto straddle the/ drivingi wheel ofsaid bicycle; the outer ends of thelegs "of "said U shaped 1 support extending through: a* considerable horizontal distance parallel -to' the plane -of movement of said'driving: Wheel, a' p'air of sub stantia-lly flat" brackets; one for each sideof 5 said driving Wheel having one end thereof oi substa ntial Width" relative to its length, means for securing-said end 0f each "of said=brack= ets tothe horizontally extendingmportion' 026- said support for movement about a horizon tal piv'ot to permit said brackets to" be folded against s aid sup port or -to be extended later ally therefrom-, an auxiliarywheeljou'r nalld to each of said brackets for" engaging. the ground when said bicycle' is 1 in: upright positioni and-*said brackets extended 13. An attachment for bicycls comprising a pair 'of bracket's, one foreach side0'f the" driving-wheel of said bicy'cle; horizontally extend-trig pivbt- -means connectfn g one end': of each -ofsaidbrackets to tk-le franie of said-f a bicycle for substantially vertical mbvementrelative to said driving wheel to permit said bracket to be foldedagainst said driving wheel or to be extended laterally therefrom, a knuckle for each of said brackets pivoted to the outer ends thereof, an auxiliary wheel ournalled on each of said knuckles, a tie rod extending between each of said knuckles and the adjacent side of said bicycle frame for maintaining said auxiliary wheels substantially parallel to said driving wheel when said bracket is in either folded or extended position.

14. An attachment for a bicycle comprising a pair of substantially fiat brackets each having a substantially great width relative to its length, means pivotally securing one of said brackets along its width to the frame of said bicycle on one side of the driving wheel thereof for vertical movement relative to said driving wheel, means pivotally securing the other of said brackets along its width to the frame of said bicycle on the opposite side of said driving wheel for vertical movement rel-- ative .to said driving wheel, an auxiliary wheel journalled to the outer end of each bracket and movable with the bracket to a plurality of positions including one position in which the auxiliary wheels engage the;

ground when the bicycle is upright and another position in which the auxiliary wheels are above the ground, a third position in which the auxiliary wheels engage the ground below the level of said driving wheel when said bicycle is upright, a toggle lever for each bracket, including two halves, one end of which is secured to the outer end of said bracket and the other end of which is secured to the frame of said bicycle at a point above the point of attachment of said bracket, whereby said toggle lever in extended position braces said bracket in said last named position and when collapsed permits said bracket to be folded relative to said driving wheel, a projection formed upon the inner end of one of said halves, and a springsecured to said frame and engageable by said projection when said toggle lever is partially folded and said wheels are in said first named position.

15. In combination with a motorcycle, a pair of auxiliary wheels and axles therefor, mounting means on opposite sides of the cycle each pivotally connected with the cycle and with an auxiliary wheel along spaced apart parallel axes which extend longitudinally relatively to the cycle frame constructed and arranged to hold said wheels parallel to the cycle frameboth when contacting the ground and when elevated into retracted position close to the cycle frame, and means yieldingly connecting each axle with the cycle frame when the drive wheel and both auxiliary wheels all contact the ground arranged for yielding balancing of the cycleon said auxiliary wheels.

16. In combination with a motorcycle, a pair of auxiliary wheels and axles therefor, mounting means on opposite sides of the cycle pivotally connected therewith and each with one of said axles along spaced apart axes extending longitudinally relatively to the cycle and provided with means for holding said axles horizontal and perpendicular to the cycle frame when the auxiliary wheels contact the ground and when they are retracted upwardly by upward rotation of said mounting means, said mounting means being pivoted and constructed to retract said wheels upwardly without increasing the over-all longitudinal dimension ofthe motorcycle.

17. In combination with a motorcycle, a pair of auxiliary wheels and axles therefor, means for mounting said wheels on opposite sides of the cycle and pivotally connected with the cycle and each with one of said wheel axles along axes extending longitudinally relatively to the cycle, said mounting means being constructed to hold the auxiliary wheels substantially parallel to the motorcycle drive wheel both when the wheelsare on the ground and when retracted close to the cycle frame, means for holding said wheels in upward retracted position, means for connecting said wheel axles yieldingly to the cycle frame when both auxiliary wheels and the drive wheel are on the ground for balancing the cycle, and means for holding said auxiliary wheels rotated on their mounting means relatively to the cycle frame to hold said drive wheel supported thereby off the ground.

18. In combination with a motorcycle, a pair of auxiliary wheels and axles therefor, mounting means on opposite sides of the cycle connecting each axle pivotally to the cycle frame with the auxiliary wheels spaced apart sufliciently when contacting the round and s when the motorcycle drive wheel 1s supported thereon for balancing the motorcycle when being towed, said mounting means being rotatable to carry said auxiliary wheels upwardly close to the cycle frame, means for retaining said wheels when in upward retracted position substantially parallel to the cycle frame, means for holding said mounting means rotated downwardly sufliciently relatively to the cycle to'support the drive wheel off the ground, and means for connecting said wheel axles yieldingly with said frame when the auxiliary wheels and drive wheel are all on the ground for balancing the motorcycle on said auxiliary wheels.

19. In combination with a motorcycle, a pair of auxiliary wheels and axles therefor, means for mounting said wheels on opposite sides of the cycle lncluding arms pivotally connected to the cycle and the respective axles on pivotal axes extending longitudinally relatively to the cycle, means operatively connected with said axles for holding said wheels substantially vertical and parallel to the cycle frame both when elevated on said arms close to the cycle and when lowered and extended away from said cycle contacting the ground, means for positioning said mounting means to hold the motorcycle drive wheel supported therebetween above the ground with the auxiliary wheels spaced far enough apart to balance the cycle when being towed, and means yieldingly connecting each axle with the cycle 10 frame when the drive wheel and both auxiliary wheels all contact the ground arranged for yielding balancing of the cycle on said auxiliary wheels.

In witness of the foregoing I afiix my signature.

ALBERT LAURANCE HESS. 

